/************************************************************************
                                                                     
   Xceed Ultimate ListBox for Silverlight                                                                                                                                            
   Copyright (C) 2010 Xceed Software Inc.    
                                                                     
   This program is provided to you under the terms of the GNU General Public  
   License version 2 as published by the Free Software Foundation. 
        
   This program is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY, without even the implied warranty of 
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.

   You should have received a copy of the GNU General Public License along 
   with this program, if not, write to the Free Software Foundation, Inc., 
   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

   This program can be provided to you by Xceed Software Inc. under a
   proprietary commercial license agreement for use in non-Open Source
   projects. Visit Xceed.com to find the commercial edition of 
   Xceed Ultimate ListBox for Silverlight.                                    
                                                                      
 **********************************************************************/

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace Xceed.Silverlight.Data
{
  internal class EstimateItemCount
  {
    internal EstimateItemCount( long value, bool isEstimate, bool basedOnOffset )
      : this( new EstimateInt64( value, isEstimate ), basedOnOffset )
    {
    }

    internal EstimateItemCount(EstimateInt64 value, bool basedOnOffset)
    {
      if( value == null )
        throw new ArgumentNullException( "value" );

      if( !value.IsEstimate && basedOnOffset )
        throw new ArgumentException( "The specified value cannot be a non estimate and based on an offset.", "value" );

      m_value = value;
      m_basedOnOffset = basedOnOffset;
    }

    internal long Value
    {
      get
      {
        return m_value.Value;
      }
    }

    internal bool IsEstimate
    {
      get
      {
        return m_value.IsEstimate;
      }
    }

    internal bool IsBasedOnOffset
    {
      get
      {
        return m_basedOnOffset;
      }
    }

#if DEBUG
    public override string ToString()
    {
      return string.Format( "({0}, basedOnOffset={1}", m_value, m_basedOnOffset );
    }
#endif

    public override int GetHashCode()
    {
      return m_value.GetHashCode();
    }

    public override bool Equals( object obj )
    {
      if( obj == null )
        return false;

      if( this == obj )
        return true;

      if( !( obj is EstimateItemCount ) )
        return false;

      EstimateItemCount otherCount = (EstimateItemCount)obj;

      return ( otherCount.m_basedOnOffset == this.m_basedOnOffset )
        && object.Equals( otherCount.m_value, this.m_value );
    }

    private EstimateInt64 m_value;
    private bool m_basedOnOffset;
  }
}
